It is currently 14 Dec 2017, 06:55

# Decision(s) Day!:

CHAT Rooms | Wharton R1 | Stanford R1 | Tuck R1 | Ross R1 | Haas R1

### GMAT Club Daily Prep

#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# In the xy-plane, the line with equation ax + by + c = 0

Author Message
Manager
Joined: 11 Jan 2007
Posts: 197

Kudos [?]: 97 [0], given: 0

Location: Bangkok
In the xy-plane, the line with equation ax + by + c = 0 [#permalink]

### Show Tags

05 Jun 2007, 19:41
00:00

Difficulty:

(N/A)

Question Stats:

100% (00:42) correct 0% (00:00) wrong based on 4 sessions

### HideShow timer Statistics

This topic is locked. If you want to discuss this question please re-post it in the respective forum.

Q26:
In the xy-plane, the line with equation ax + by + c = 0, where abc ≠ 0, has slope . What is the value of b?
(1) a = 4
(2) c = −6

Q32:
If m and v are integers, what is the value of m + v?
(1) mv = 6
(2) (m + v)^2 = 25
_________________

cool

Kudos [?]: 97 [0], given: 0

CEO
Joined: 29 Mar 2007
Posts: 2553

Kudos [?]: 537 [0], given: 0

### Show Tags

05 Jun 2007, 19:57
Q32: C.

Stmnt1: 2*3=6, 6*1=6 insuff. m+v could be 5 or 7.

Stmnt 2: (m + v)^2 = 25 (4+1)^2=25 or (3+2)^2=25

insuff.

Together: since m and v are integers... 3+2=5 3*2=6
take other numbers 1+4=5 1*4≠6 So C is the answer

Kudos [?]: 537 [0], given: 0

Director
Joined: 26 Feb 2006
Posts: 900

Kudos [?]: 165 [0], given: 0

### Show Tags

05 Jun 2007, 20:05
jet1445 wrote:
Q32: If m and v are integers, what is the value of m + v?
(1) mv = 6
(2) (m + v)^2 = 25

from 1:

if m = 1, v = 6
if m = 2, v = 3
if m = 3, v = 2
if m = 6, v = 1
if m = -1, v = -6
if m = -2, v = -3
if m = -3, v = -2
if m = -6, v = -1. so nsf...

from 2:

if m = 1, v = 4
if m = 2, v = 3
if m = 3, v = 2
if m = 6, v = -1
if m = -1, v = 6
if m = -2, v = -3
if m = -3, v = -2
if m = -6, v = 1. so on............ so nsf.

from 1 and 2:

if m = 2, v = 3.
if m = -2, v = -3.
if m = 3, v = 2.
if m = -3, v = -2. so still NSF.

alternatively:

from 1: mv = 6 ............i

from 2: (m + v) ^2 = 25
m + v = + or - 5.......................ii
so we can different values if we solve eq i and ii.

Should be E.

Kudos [?]: 165 [0], given: 0

SVP
Joined: 01 May 2006
Posts: 1794

Kudos [?]: 171 [0], given: 0

Re: 2 DS - XY-Plan / Number properties [#permalink]

### Show Tags

05 Jun 2007, 22:31
jet1445 wrote:
Q26:
In the xy-plane, the line with equation ax + by + c = 0, where abc ≠ 0, has slope . What is the value of b?
(1) a = 4
(2) c = −6

Would u revise your question? The bold part seems to have a missing element.

Currently, the answer is (E). But if the slope is given, the answer is (A)

Kudos [?]: 171 [0], given: 0

Manager
Joined: 17 Oct 2006
Posts: 52

Kudos [?]: 2 [0], given: 0

### Show Tags

06 Jun 2007, 03:18
for Q 32, the answer seems to be E.
I is clearly insufficient as 6*1 and -6*-1 both yield 6.
II is also in sufficient as 3+2 and -3+ -2 both when squared give 25.
when taken together still it is insufficient because 3*2 and -3*-2 both give 6 abd when summed and takeb square both give 25. so both statements taken together dont give a definite answer.
The thing to look closely in this sort of questions is the word INTEGERS. this can reduce the answer options and make a question solvable.

for Q 26. I shall give the answer next week as by then I would have completed cordinate geometery. Just kidding...

Kudos [?]: 2 [0], given: 0

CEO
Joined: 29 Mar 2007
Posts: 2553

Kudos [?]: 537 [0], given: 0

### Show Tags

06 Jun 2007, 07:07
Ya ur right its E. Forgot bout those negative numbers.

Kudos [?]: 537 [0], given: 0

Manager
Joined: 22 May 2007
Posts: 121

Kudos [?]: 6 [0], given: 0

### Show Tags

06 Jun 2007, 07:55
Are you guys sure that negative numbers can be integers?

Kudos [?]: 6 [0], given: 0

Manager
Joined: 22 May 2007
Posts: 121

Kudos [?]: 6 [0], given: 0

### Show Tags

06 Jun 2007, 07:57
Opps, never mind. They are

Kudos [?]: 6 [0], given: 0

Intern
Joined: 04 Feb 2007
Posts: 37

Kudos [?]: 2 [0], given: 0

### Show Tags

06 Jun 2007, 09:11
26) WHEN slop not given.....E and when given (A)

27) E, sure.

Kudos [?]: 2 [0], given: 0

06 Jun 2007, 09:11
Display posts from previous: Sort by